Concept:Cut-through switching is a frame-forwarding method that prioritizes speed over error checking.
Explanation:In a switched Ethernet LAN, cut-through switching begins forwarding a frame as soon as the destination MAC address is read.
The destination MAC address is present in the first 6 bytes of the frame, so the switch does not wait for the entire frame to arrive.
This results in the lowest possible latency because forwarding starts almost immediately.
However, the switch does not perform a Cyclic Redundancy Check (CRC) on the full frame before forwarding it.
As a result, corrupted frames or runt frames may be forwarded to the destination, increasing the risk of errors.
In contrast, store-and-forward switching buffers the entire frame and checks the CRC before forwarding, which is reliable but slower.
Fragment-free switching waits for the first 64 bytes, balancing speed and error detection.
Token passing is not a switching method but a media access control technique used in Token Ring networks.
Answer:A. Cut-Through Switching